The modular design of the PowerVault MD1120 is engineered for easy expansion - giving you more room to store data from your server. Up to six PowerVault MD1120 24 -drive expansion enclosures can be connected to a dual port PERC6/E giving you between 24 and 144 disk drives options. To keep management simple the PowerVault MD1120 connects to and can be controlled by a single PERC RAID controller equipped PowerEdge server. Configure the specific combination of storage resources you need now, and add more storage volume later, quickly and easily.